Separator



March 9, 1937. E. SAINT-JACQUES 2.073,52()

SEP-ARATOR Filed Feb. '7, 1955 2 Sheets-Sheet 24 Patented Mu. 9, 1931UNITED sTATEs PATENT oFricE Y* srrm'roa Eugne camine saint-Jacques,rai-n, France Application February 7, 1935, Serial No. 5,474 In FranceFebruaryL 22, 1934 4 Clam' The present invention has as its subject aprocess and apparatus for separating solid particles from a gaseous orliquid fluid in which they' are held in suspension.4

5 'I'he apparatus according to my invention comripheral wall constitutedby ascreen,.a conduit for the supply of the suspension located at thecenter of the base of said drum, a conduit lo- `cated at the centerofthe top of said drum for the removal of fluid, and a xed iiuid tightcasing outside said drum and serving for the collection o'f the solidparticles.'

By my invention the mixture of uid and solid particles is caused toenter inside a drum driven with a rapid rotating movement about itsaxis, andbetween the periphery and the axis of which gratings or screensare arranged, the meshes of which have dimensions at least equal tothose or the largest solid particles to be separated, so

as to impart to the said mixture a gyratoryV movement and to divide itinto substantially horizontal jets directed towards the periphery of thedrum on to which the solid particles are Vthen applied under the effectof centrifugal force while the fluid is drawn o through the end oi thedrum opposite that throughwhich its intro# duction took place.

The periphery of the drum is advantageously constituted by superposedlouvres preferably inclined to the horizontal from above to below andfrom inside to outside so that the solid particles projectedagainstthese louvres may be drawn oil' to the outside progressivelywhich permits a continuous operation of the device. Around the drum inthis case there may be disposed a iixed iluid tight wall in which arecollected the solid particles separated from the gaseous or liquid uid.

The rotary drum has for preference a cylindrical form. The gratings orscreens provided in its interior may likewise form a cylinder ar` rangedco'axially therewith or may constitute an. assembly of polygonal sectioninscribed in the cylinder of the drum. In this embodiment open. ings maybe arranged along the edges of the prism formed by the screens to permitthe direct expulsion to the outside of the drum of the solid materials.which may tend to accumulate in the interior angles of the prisms.

The rotary drum may also be providedwith a single wall constituted by agrating or screen,

having meshes the dimensions ofiwhich are at least equal toI those ofthe largest particles to be separated, so that the construction of theapparatus is`a very simple one. l

The outlet ofthe fluid at the upper part of the drum may be effected bymeans of a central conduit analogous to that used for the inlet of the60 mixture of uid and solid particles. Preferably prises a rotatablymounted drum having a pethe radial partitions which exist in both ofthese conduits are inwardly curved so as to favour the gyratory movementof the iiuid. 1

Moreover in the interior of the drum there may' be advantageouslyarranged blades fixed against the grating or screen at a convenientinclination with respect to the vertical with the object ofacceleratingthe rotation of the mixture of iluid and solid particles.

At the exterior of the drum there may likewise be iixed onthe grating orscreen suitably inclined blades intended to increase the speed ofrotation of the uid contained in the annular space which is presentbetween the drum and the iixed wall in order to produce a certaindepression which facilitates the admissonof the solid particles intothis annular space.

Finally on the shaft of the drum between the central inlet and outletconduits a disc or discs or plates forming deilectors may be fixed.Blades may also be arranged on this central shaft .so as to acceleratethe rotary movement of the fluid in which powder dust is in suspensionand to drive the solid particles towards the periphery. The invention isillustratedin the accompanying drawings in which:

Figure 1 is a vertical axial schematic section of an embodiment of adevice for carrying out the invention.

Figure 2 is a transverse section of this appa- 30 ratus on line II-lI ofFigure 1.

Figure 3 is an analogous section -of a modication Figure 4 is an axialvertical section of a modification, Y A

Figure 5 is a section along the line V'V of Figure 4, and

Figure 6 is a section on the line lll-VI of' I l Figure 4. y In theexample -of Figures 1 and 2 the rotary drum. arranged verticallycomprises a vlateral cylindrical wall I formed by superposed inclinedlouvres and encloses a 'cylinder 2 ofwire gauze having the same axis asthe wall l.` At its lower part the drum is provided with base 3 providedwith central openings 4 to whichis connected `a conduit 5 serving vforthe introduction of the mixture of gaseous or liquid fluid and solidparticles vdriven by means of a fan, a pump or other apparatus notshown. At the upper part of the drum is arranged a base 6 comprisingradial conduits 1 substantially horizontal communicating with theannular space arranged between the wall l I and the screen 2 and openinginto an outlet conduit 8.

The drum A is enclosed in a iluid tight envelope 9 which may be providedwith an inspection door I0 and extending from the lower part of theenvelope is a conical hopper Il.V

'Ihe said drum is iixed upon a-shaft I2 which 50 pivots in suitablebearings I3, Il and which is actuated at its upper end by a suitablecontrol device.

As is apparent from Vthe foregoing description the mixture of gaseous orliquid fluid and solid particles introduced into the opening 4 to theinterior of the drum A is slibjectedin this latter to a gyratorymovement and it is divided through the screen 2 into a large number ofjets which are l0 substantially horizontal and whichV strike the louvresof the wall I. Under the effect of centrifugal force the solid particlesare applied to these louvres and due to the inclination of these aredrawn oil. into the envelope 9 where they are collected towards thebottom in the hopper li. 'lihel gaseous or liquid iluid escapes throughthe upper orifices 1 and is drawn oil at 8. When the apparatusis usedfor the purification of a liquid iluid the envelope 9 must be lled withthis liquid.

2o Thhopper Il isthenclosedandthedi'ainingof the solid particlescollected is carried out pe In the modification of Figure 3 the screen 2instead of being cylindrical has a polygonal section inscribed in thecircumference of the wall I ofthedrum. Theedges2aofthisscreenareslightly projecting 'outside' the drum and have,

. preferably'over their vwhole length, arropening 2b which permitsthe'edirect expulsion under the action of centrifugalrforce of materialscapable of accumulating in the angles.

In the modici'stioxiVV of Figure 4 the wall ,of the rotary drum isformed solely by a cylinder .of wire gauze 2 ilxedthrough theintermediaryof the bases 3 and I'fforming hubs on-the shaft I2 whichpivots inf'suitable bearings and which .is actuated at' its upper end bya suitable control -device (not `shown). The dimensions of the 'meshesof the wire gauze2 are at least equal to '.arated. A fluid tight fixedenvelope l is ex-t tended at its lower part by a conical hopper Il forthe removal of the solid particles.

Central openings .44 are provided in the lower base 3. yThe conduit Iserving for the introduction of the gaseous fluidjis connected to theseopenings, which openings are separated by partitions I9 curved inwardlyin the sense of the rotation of Athe drum and which play the part ofblades. On the other hand the upper base l arranged in a similarmannerto the lower base likewise comprises central openings 1' separatedby inwardly curved partitions forming blades.`

Onthe'intemal -wall of the cylinder of wire 8auze2are connected bladesI5 inclined with respect to the vertical in the direction appropriate toproduce an acceleration of the movement of the rotation of the mixtureof fluid and solid particles, and Awhich are preferably limited only toa part of the length of the said cylinder. Above the upper end of theseblades a deilector Il solid with the shaft i2 .diameter less than thatof thedrum so as to leave a certain annular passage between its freeedge and-the perforated wall of the drum.

There may also be mounted upon the shaft l2 blades Il which produce amovement of rotation even close to this shaft thus causing the so. 'dparticles to be directed towards the Upon the external wall of thecylinler 2 are connected blades l1 inclined-'in the same direction asthe interior blades il but which stretch over the whole lengthcf thecylinder.

the dimensions ofthe largest particles to be sep-V may-be arranged andhaving a- The apparatus shown in Figure 4 may be used 'for separatingparticles suspended in a liquid or in a gaseous medium. .It isparticularly adapted for treating gaseous mediums and when the apparatusis employed for purifying a liquid, the uid 5 tight envelope 9 must beillled with said liquid. The hopper l I is then closed near the bottomand the solid particles which collect therein are periodically removed.

What is claimed'is: l.` Apparatus for separating solid particles fromsuspension in a fluid, comprising arotatable axis, a'drum rotatablymounted on said axis and having a peripheral wall constiuted by ascreen, the meshes of which havedimensions at least equal to those ofthe largest particles to 'oe separated. a conduit for the suppl? of thesuspension located at the center of the base of said drum, a conduitlocated at the top of said drum for the removal of fluid, a xed fluidtight casing outside said drum and serving for the collection of thesolid particles, partitions in the conduit for supply of the suspensionand in the conduit for the removal of uid, said partitions being curvedto induce gyratory Vmovement of the suspension. inclined blades locatedwithin the drum and fastened to and entirely supported by the inner wallthereof to induceY gyratory movement of the suspension, blades mountedon the external wall of the drum and at least one deilector platem'ounted on the axis of the drum.

2. In apparatus for separating solid particles from a fluid suspension,a shaft. a drum axially imounted on said shaft, .said `drum having itsperipheral wall constituted by a screen, an inlet 35 conduit axiallyconnected at one end of said drum, an outlet conduit axially connectedto the other end of the drum, a denector plate mounted on said shaft,the outer margin of the plate being spacediromtheinnerwallofthedrum,andblades secured'to and supportedentirely by the inner wall of the drum.and a fluid-tight casing outside said drum and spaced therefrom.'

3. In apparatus for separating solid particles from a fluid suspension,a shaft, a drinn axiallf mounted on said shaft, said drum having itsperipheral wall constituted by a screen, an inlet conduit' axiallyconnected at one end of said drum, an outlet conduit axially connectedtothe other end of the drum, a deilector plate mounted 60 on said shaft,the outer margin of the plate beingVspacedfromtheinnerwallofthedrum,blades screen and Spiced securedtothe-shaft to urge the solid particles toward the periphery of thedrum, anda' iluid` tight casing outside said drum and spaced therefrom.

4.' I n apparatus for separating solid 4particles from a fluidsuspension, a cylindrical screen ro- Y tatably mounted on a shaft, anaxially located inlet conduit connected to one end of the screen, anaxially located outlet conduit connected to the other end of the screen.said conduits having partitions therein which are curved to favor theVgyratory movement ofthe suspemion, said screen having a substantiallyunobstructed interior portion, blades secured to the inner wall of-thescreen inclined to aid the gyratcl'y m'otion ofthe suspension, and ailuidetight casing,Y outside of said noem camru: sAnrr-JacQUns.

